CVE-2026-57571

Crawl4AI is an open-source LLM-friendly web crawler and scraper. Prior to 0.9.0, when the crawler saves a downloaded file, the destination filename was taken from attacker-influenced input and joined to the downloads directory with no confinement. A filename containing an absolute path or traversal escaped the downloads directory, giving an arbitrary file write with attacker-controlled contents; the HTTP crawler path uses the response Content-Disposition filename and the browser crawler path uses the download's suggested filename. Because the written bytes are attacker-controlled, this can escalate to remote code execution. This issue is fixed in version 0.9.0.

CVSS v3 9.6 CRITICAL

9.6^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 2.8 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://github.com/unclecode/crawl4ai/commit/60886d1a0c52682e4c83a7cef9dfac417fff6bd2	Patch
https://github.com/unclecode/crawl4ai/security/advisories/GHSA-2jq4-q6vv-4cp3	Mitigation Vendor Advisory Exploit

Configurations

Configuration 1 (hide)

cpe:2.3:a:kidocode:crawl4ai:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-07-06 21:16

Updated : 2026-07-07 19:07

NVD link : CVE-2026-57571

Mitre link : CVE-2026-57571

CVE.ORG link : CVE-2026-57571

JSON object : View

Products Affected

kidocode

crawl4ai

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CWE-59

Improper Link Resolution Before File Access ('Link Following')

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